CALLISTOFUSION

7 Job openings at CALLISTOFUSION
Artificial Intelligence Engineer India 0 years None Not disclosed Remote Contractual

Hi, We have a 6-month (possibilities of further extension) Contract requirement for AI Developer OFFSHORE REMOTE Europe time zone -Central European Time (CET). Working hours will be 5 am/ 5:30am/6 am to 2 pm/2:30 pm / 3 pm IST Position: AI Developer Duration: 6-month (possibilities of further extension) Annual Salary: DOE Work Location: REMOTE Required Experience: 5 yrs Primary Skills Knowledge of Python AWS Lambda AWS Bedrock Detailed JD as follows: 1. Prompt Engineering Techniques – Advanced Design effective prompts for large language models to optimize accuracy, reduce hallucinations, and guide reasoning using few-shot, zero-shot, and chain-of-thought approaches. Work with foundation models via APIs (e.g., OpenAI, AWS Bedrock) to build real-world applications across domains. 2. Generative Modeling Techniques – Intermediate Implement and experiment with generative models like GPT, BERT, or other Transformer-based architectures. Apply pre-trained models in NLP, content generation, or summarization tasks using platforms like Hugging Face or AWS Bedrock. 3. Agentic AI and Reinforcement Learning – Intermediate Understand and integrate basic agentic frameworks that combine reasoning, memory, and planning. Work with simulation environments (e.g., OpenAI Gym) and apply standard reinforcement learning algorithms for prototype development. 4. Building Responsible and Ethical AI – Intermediate Implement fairness-aware model evaluation and explainability practices using tools like SHAP or LIME. Follow best practices for privacy, bias mitigation, and governance in AI systems. 5. Cloud Deployment and MLOps – Intermediate Deploy AI models using AWS Lambda , AWS Bedrock , and SageMaker for serving and scalability. Participate in building MLOps pipelines and model versioning using MLflow or similar tools. 6. Machine Learning Frameworks (PyTorch/TensorFlow) – Beginner Train and fine-tune small-scale models using PyTorch or TensorFlow under guidance or for prototyping. Leverage existing models via transfer learning for quick deployment. 7. Data Preprocessing and Feature Engineering – Beginner Clean and transform raw data for modeling tasks. Perform exploratory data analysis (EDA) and develop basic feature extraction pipelines. 8. Containerization and CI/CD – Beginner Learn and assist in containerizing ML applications using Docker. Support implementation of CI/CD pipelines and Git-based workflow integrations.

Workflow Engineer - Digital Oilfield Systems new delhi,delhi,india 7 years None Not disclosed On-site Contractual

Hi, We have a 6-12 month requirement for Workflow Engineer - Digital Oilfield Systems for Kuwait (Onsite) Job Title: Workflow Engineer - Digital Oilfield Systems Location: Kuwait (Onsite) Visa Fees, Air fare, Hotel Stay, Cab to office provided by client plus US$ 40 per day ( INR 3550 i.e 12.28 Kuwaiti Dinar per day) as daily expense. Job Type: 12 months (possibilities of further extension) Experience Level: 7 years of experience Salary : Annual Salary Plus Visa Fees, Air fare, Hotel Stay, Cab to office provided by client plus US$ 40 per day ( INR 3550 i.e 12.28 Kuwaiti Dinar per day) as daily expense. Job Requirement Responsible for developing and implementing production solutions and individual workflows. Capable of organizing, collecting and reporting data necessary for the definition and specification of the production engineering processes. Experience in well modelling, nodal analysis, and capable of generating integrated asset models under general supervision of the technical lead project. Familiar with production optimization workflows, and debottlenecking very large complex infrastructures. Capable of working in a fast paced and deadline driven work environment. Skills are typically acquired through about 7+ years of consulting, supporting upstream work processes and IT projects. Key Responsibilities: · Champions the implementation of workflows with the direction of the technical lead. · Resolves issues related with the implementation of the workflow. · Organizes data collection and reports information about the definition and specification of the domain engineering processes. · Designs and develops details of engineering calculations, workflows · Develops process models (Reservoir, Surface, Proxy's, etc.) · Works closely with the Business Architect to integrate the needs of the users. · Assists with documentation necessary for the workflow implementation. · Assists with testing to ensure that the user’s needs are met. Required Qualifications: · Completion of an undergraduate degree in engineering (petroleum, mechanical or chemical), Computer Science. Master’s degree is desirable Preferred Skills: · Technology o Proven working experience in Python development, Familiar with basic data structures and algorithms o Project experience using Python for API development and data analysis. o Object oriented analysis and design using common design patterns o Excellent knowledge of relational databases, SQL o Experience in deploying, managing, administering and monitoring workflow o Experience in Nexus and well modelling is desirable · Domain (proficient in at least one of the 3 domain areas below) o Experience working as oil and gas domain o Landmark Business Domain – Production o Knowledge and experience in modelling technologies · General o Proven hands-on software development experience o Good communication with English o Good problem-solving skills o Good documentation skills o Flexible to travel

Workflow Engineer delhi 7 years INR 10.0 - 20.0 Lacs P.A. On-site Part Time

Hi, We have a 6-12 month requirement for Workflow Engineer - Digital Oilfield Systems for Kuwait (Onsite) Job Title: Workflow Engineer - Digital Oilfield Systems Location: Kuwait (Onsite) Visa Fees, Air fare, Hotel Stay, Cab to office provided by client plus US$ 40 per day ( INR 3550 i.e 12.28 Kuwaiti Dinar per day) as daily expense. Job Type: 12 months (possibilities of further extension) Experience Level: 7 years of experience Salary : DOE Plus Visa Fees, Air fare, Hotel Stay, Cab to office provided by client plus US$ 40 per day ( INR 3550 i.e 12.28 Kuwaiti Dinar per day) as daily expense. Job Requirement Responsible for developing and implementing production solutions and individual workflows. Capable of organizing, collecting and reporting data necessary for the definition and specification of the production engineering processes. Experience in well modelling, nodal analysis, and capable of generating integrated asset models under general supervision of the technical lead project. Familiar with production optimization workflows, and debottlenecking very large complex infrastructures. Capable of working in a fast paced and deadline driven work environment. Skills are typically acquired through about 7+ years of consulting, supporting upstream work processes and IT projects. Key Responsibilities: · Champions the implementation of workflows with the direction of the technical lead. · Resolves issues related with the implementation of the workflow. · Organizes data collection and reports information about the definition and specification of the domain engineering processes. · Designs and develops details of engineering calculations, workflows · Develops process models (Reservoir, Surface, Proxy's, etc.) · Works closely with the Business Architect to integrate the needs of the users. · Assists with documentation necessary for the workflow implementation. · Assists with testing to ensure that the user’s needs are met. Required Qualifications: · Completion of an undergraduate degree in engineering (petroleum, mechanical or chemical), Computer Science. Master’s degree is desirable Preferred Skills: · Technology o Proven working experience in Python development, Familiar with basic data structures and algorithms o Project experience using Python for API development and data analysis. o Object oriented analysis and design using common design patterns o Excellent knowledge of relational databases, SQL o Experience in deploying, managing, administering and monitoring workflow o Experience in Nexus and well modelling is desirable · Domain (proficient in at least one of the 3 domain areas below) o Experience working as oil and gas domain o Landmark Business Domain – Production o Knowledge and experience in modelling technologies · General o Proven hands-on software development experience o Good communication with English o Good problem-solving skills o Good documentation skills o Flexible to travel Job Type: Contract Contract length: 12 months Experience: Job Type: Contractual / Temporary Contract length: 12 months Pay: ₹1,000,000.00 - ₹2,000,000.00 per year Experience: Workflow: 7 years (Required) Work Location: In person

Senior Backend Developer delhi 7 years INR 3.3199 - 14.88569 Lacs P.A. On-site Part Time

Hi We have a 6-month (possibilities of further extension) requirement for Senior Backend Developer for Kuwait (Onsite) Job Title: Senior Backend Developer Location: Kuwait (Onsite) Visa Fees, Air fare, Hotel Stay, Cab to office provided by client plus US$ 40 per day ( INR 3550 i.e 12.28 Kuwaiti Dinar per day) as daily expense. Job Type: 12 months (possibilities of further extension) Experience Level: 7 years of experience Salary : DOE Responsible for the definition, management and support of the database environments associated with the Production project implementation under general supervision of development lead. Is able to implement and maintain project data model including managing the performance, integrity and security of databases. Capable of making effective and efficient decisions regarding database models and infrastructure. Skills are typically acquired through 7+ years of experience implementing and managing Java and SQL databases Key Responsibilities: · Develops and maintains backend services(Java). · Develops and maintains project data model. · Manages and supports databases including developing required queries and stored procedures · Establishes the needs of users and monitors user access and security · Assists team with the debugging and optimization of SQL queries and stored procedures. · Ongoing database performance tuning and upgrades, including monitoring and evaluation of all database patches and service packs Required Education and Skills: Completion of an undergraduate degree in Computer Science, Computer Engineering or MIS Certification in related tool e.g. SQL, Java, Oracle is desirable Skills: · Technology · Understanding of relational databases and concepts · Good working with SQL server/Postgres · Good working with Java Program · Proven experience with system analysis and database design · Proven working experience in database optimization · Proven working experience with Java programming language. · Proven working experience with Microservices development · Experience with database backup/recovery · Good understanding of data security · Experience working in big data is desirable · Data science knowledge is desirable · General · Proven hands-on Software Development experience · Good communication with English · Good problem-solving skills · Good documentation skills · Flexible to travel · Experience working as oil and gas domain is preferred Landmark Business Domain is preferred Job Type: Contractual / Temporary Contract length: 12 months Pay: ₹331,990.12 - ₹1,488,569.05 per year Experience: Java: 7 years (Required) Back-end development: 7 years (Required) Work Location: In person

Senior Backend Developer new delhi,delhi,india 7 years None Not disclosed On-site Contractual

Hi We have a 6-month (possibilities of further extension) requirement for Senior Backend Developer for Kuwait (Onsite) Job Title: Senior Backend Developer Location: Kuwait (Onsite) Visa Fees, Air fare, Hotel Stay, Cab to office provided by client plus US$ 40 per day ( INR 3550 i.e 12.28 Kuwaiti Dinar per day) as daily expense. Job Type: 12 months (possibilities of further extension) Experience Level: 7 years of experience Salary : DOE Plus Visa Fees, Air fare, Hotel Stay, Cab to office provided by client plus US$ 40 per day ( INR 3550 i.e 12.28 Kuwaiti Dinar per day) as daily expense. Responsible for the definition, management and support of the database environments associated with the Production project implementation under general supervision of development lead. Is able to implement and maintain project data model including managing the performance, integrity and security of databases. Capable of making effective and efficient decisions regarding database models and infrastructure. Skills are typically acquired through 7+ years of experience implementing and managing Java and SQL databases Key Responsibilities: · Develops and maintains backend services(Java). · Develops and maintains project data model. · Manages and supports databases including developing required queries and stored procedures · Establishes the needs of users and monitors user access and security · Assists team with the debugging and optimization of SQL queries and stored procedures. · Ongoing database performance tuning and upgrades, including monitoring and evaluation of all database patches and service packs Required Education and Skills: Completion of an undergraduate degree in Computer Science, Computer Engineering or MIS Certification in related tool e.g. SQL, Java, Oracle is desirable Skills: · Technology · Understanding of relational databases and concepts · Good working with SQL server/Postgres · Good working with Java Program · Proven experience with system analysis and database design · Proven working experience in database optimization · Proven working experience with Java programming language. · Proven working experience with Microservices development · Experience with database backup/recovery · Good understanding of data security · Experience working in big data is desirable · Data science knowledge is desirable · General · Proven hands-on Software Development experience · Good communication with English · Good problem-solving skills · Good documentation skills · Flexible to travel · Experience working as oil and gas domain is preferred Landmark Business Domain is preferred Job Type: Contract Contract length: 12 months Experience: Backend : 7 years (Required) Java: 7 years (Required)

Workflow Engineer - Digital Oilfield Systems delhi 7 - 11 years INR Not disclosed On-site Full Time

As a Workflow Engineer - Digital Oilfield Systems in Kuwait, your role involves developing and implementing production solutions and individual workflows. You will be responsible for organizing, collecting, and reporting data essential for defining and specifying production engineering processes. Your experience in well modelling, nodal analysis, and generating integrated asset models will be utilized under the general supervision of the technical lead project. Additionally, you should be familiar with production optimization workflows and debottlenecking large complex infrastructures. Your work environment will be fast-paced and deadline-driven, and your skills are expected to be acquired through about 7+ years of consulting, supporting upstream work processes, and IT projects. Key Responsibilities: - Champion the implementation of workflows under the direction of the technical lead. - Resolve issues related to the implementation of workflows. - Organize data collection and report information regarding the definition and specification of domain engineering processes. - Design and develop engineering calculations and workflows. - Develop process models such as Reservoir, Surface, Proxy's, etc. - Collaborate with the Business Architect to integrate user needs. - Assist in documentation required for workflow implementation. - Support testing to ensure user needs are met. Required Qualifications: - Completion of an undergraduate degree in engineering (petroleum, mechanical, or chemical), Computer Science. A Master's degree is desirable. Preferred Skills: Technology: - Proven working experience in Python development, familiarity with basic data structures and algorithms. - Project experience using Python for API development and data analysis. - Object-oriented analysis and design using common design patterns. - Excellent knowledge of relational databases, SQL. - Experience in deploying, managing, administering, and monitoring workflows. - Experience in Nexus and well modelling is desirable. Domain (proficient in at least one of the 3 domain areas below): - Experience working in the oil and gas domain. - Landmark Business Domain Production expertise. - Knowledge and experience in modelling technologies. General: - Proven hands-on software development experience. - Good communication skills in English. - Strong problem-solving abilities. - Proficient documentation skills. - Willingness to travel. Please note that Visa Fees, Airfare, Hotel Stay, Cab services to the office, and a daily expense of US$ 40 (INR 3550) will be provided by the client during your tenure in Kuwait. This is a 12-month job with possibilities of further extension.,

MERN Developer pune 5 - 8 years INR Not disclosed On-site Part Time

Hi, We have a 12-month Plus requirement for MERN Developer for locations Pune and Bangalore (Onsite Work from Office - General Shift) Job Title: MERN Developer Location: Pune (Onsite Work from Office - General Shift) Job Type: 12 months (possibilities of further extension) Experience: 5-8 years Salary : DOE Key Skills: React.js, JavaScript, Next.js. Good communication skills and the candidate should be presentable Mandatory Skills: Experience with building RESTful APIs using Node.js and Express.js. Solid understanding of the MERN stack and its components. Knowledge of database systems, particularly MongoDB, and experience with data modeling. JavaScript frameworks/libraries such as React. Should have experience with writing unit test cases using frameworks such Mocha & Chai. Build performant and SEO-friendly web applications using React.js and Next.js Design and develop backend services using Node.js and Express.js Work with MongoDB for data storage and retrieval Collaborate across design, backend, and project management teams Write clean, maintainable, and well-documented code Participate in agile ceremonies, reviews, and deployments Hands-on experience in rendering NextJS apps using SSR and SSG. Expertise in Server Actions, API routes. Understanding of core web vitals. Good to have Technical Skills: Understanding of GCP (preferred) or similar cloud providers, such as AWS and DevOps. Key Responsibilities: Participate in the entire application lifecycle, including concept, design, development, testing, deployment, and support. Collaborate with front-end and back-end developers, designers, and stakeholders to gather and understand project requirements. Design and implement efficient and reusable backend and frontend components using the MERN stack. Develop robust and scalable APIs using Node.js and Express.js for seamless integration with front-end components. Build responsive and user-friendly UI components using React.js, ensuring high performance and optimal user experience. Integrate user-facing elements with server-side logic, ensuring high performance and responsiveness. Write efficient and well-documented code following best practices and industry standards. Debug and resolve software defects and technical issues as they arise during the development and testing phases. Collaborate with the QA team to conduct thorough testing to identify and address any performance or functionality gaps. Participate in code reviews to maintain code quality and ensure adherence to coding standards. Stay up to date with the latest industry trends and emerging technologies to continuously improve development practices. Contribute to improving development processes and workflows for enhanced team efficiency. Assist in estimating project timelines and providing accurate updates on progress. Job Type: Contractual / Temporary Contract length: 12 months Pay: ₹234,884.64 - ₹1,218,915.92 per year Experience: MERN: 5 years (Required) Node.js: 5 years (Required) Work Location: In person